CN2787734Y - Automatic idling device of small-sized hydraulic excavator - Google Patents
Automatic idling device of small-sized hydraulic excavator Download PDFInfo
- Publication number
- CN2787734Y CN2787734Y CN 200520050630 CN200520050630U CN2787734Y CN 2787734 Y CN2787734 Y CN 2787734Y CN 200520050630 CN200520050630 CN 200520050630 CN 200520050630 U CN200520050630 U CN 200520050630U CN 2787734 Y CN2787734 Y CN 2787734Y
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- CN
- China
- Prior art keywords
- small cylinder
- small
- idle speed
- acceleration cable
- hydraulic excavator
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Abstract
The utility model discloses an automatic idling device of a miniature hydraulic excavator, which comprises an engine throttle and a throttle pull wire, wherein the throttle pull wire of a miniature hydraulic excavator is provided with a throttle pull wire adjusting device. The throttle pull wire adjusting device is formed by that a small hydraulic cylinder is connected in series with the throttle pull wire or the small hydraulic cylinder is transversely connected with the throttle pull wire. The utility model can reduce the throttle when the excavator is in a stand-by state, and the throttle can be again quickly increased when the automatic idling device of a miniature hydraulic excavator is used for excavating. Thus, the automatic idling device of a miniature hydraulic excavator not only can reduce fuel consumption, but also can reduce the labor intensity and the noise of operating staffs simultaneously. The utility model can bring short-time quiet for operating staffs, and can also effectively protect engines.
Description
Technical field
The utility model relates to a kind of excavator, particularly a kind of auto idle speed device of small type hydraulic excavator.
Background technology
Mini-excavator is a kind of engineering machinery that is widely used in building operations.Excavator construction maneuverability, the efficiency of construction height, in work progress, stand-by time is more, though the standby interval time is not long, but comparatively frequent.Because when excavating construction, engine throttle all adds very greatly, can not shut down, otherwise fragile motor simultaneously frequent shutdown or to reduce throttle also be a burden during standby concerning the operator at once.
Summary of the invention
The purpose of this utility model provides a kind of auto idle speed device of small type hydraulic excavator, and to solve existing small type hydraulic excavator stand-by time more for a long time, the operator need frequently reduce the problem of throttle.
For realizing above-mentioned purpose, the technical solution of the utility model is: comprise engine throttle, acceleration cable, the acceleration cable of small type hydraulic excavator is provided with the acceleration cable adjusting device.
In the auto idle speed device of above-mentioned small type hydraulic excavator, described acceleration cable adjusting device is a small cylinder, and is serially connected with in the backguy of dropping in, and small cylinder is installed in the sliding sleeve.
In the auto idle speed device of above-mentioned small type hydraulic excavator, described acceleration cable adjusting device is a small cylinder that laterally links to each other with acceleration cable, and the pistons end of small cylinder links to each other with acceleration cable.
The auto idle speed device of above-mentioned small type hydraulic excavator, acceleration cable pass two fixed pulleys, and small cylinder is located between two fixed pulleys, and the pistons end of small cylinder links to each other with acceleration cable through fixed pulley.
In the auto idle speed device of above-mentioned small type hydraulic excavator, the control connection of described small cylinder is: connect with guide switch K and receive power supply with after the series arm of the control coil composition of small cylinder Y is in parallel in series arm that the series arm that the control coil of pressure switch KP and relay K M is formed, the contact of relay K M and the control coil of time relay KT are formed and the contact of time relay KT.
In the auto idle speed device of above-mentioned small type hydraulic excavator, be serially connected with idle speed control K switch 1 in the series arm that the control coil of described pressure switch KP and relay K M is formed.
The auto idle speed device of above-mentioned small type hydraulic excavator, the control control connection of described small cylinder is: pressure switch KP, idle speed control K switch 1 link to each other with controller, and the output of controller connects the control coil of small cylinder Y.
Operating principle of the present utility model is: when the excavator standby, detect in the hydraulic pilot oil circuit and do not have pressure, if this time surpasses certain value, control device thinks and enters holding state that control device drives the acceleration cable adjusting device, regulate acceleration cable length, make throttle get back to idle position, in case the driver's operation handle, control device detects pilot pressure, control device drives the small cylinder return, engine speed is got back to regulated preceding state.
Advantage of the present utility model:
1), the utility model can reduce throttle when the excavator standby; again throttle is added up fast during excavation, so not only can reduce fuel consume, can reduce labor intensity of operating personnel and noise simultaneously; give operating personnel tranquil in short-term, effectively the protection motor.
2), the The whole control device is simple and reliable, and fully just utilized machine hydraulic pressure can drive small cylinder, drive economical and more reliable than electric linear motor.
3), the cost after the enforcement has only below 20% of existing accelerator control device.
Description of drawings
Fig. 1 is the structure chart of the utility model embodiment 1.
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
Fig. 3 is in the structure chart of idling mode for the utility model.
Fig. 4 is the structure chart of the utility model embodiment 2.
The specific embodiment
Referring to Fig. 1, Fig. 2, the utility model comprises engine throttle 1, fixed head 2, sliding sleeve 3, small cylinder 4, acceleration cable 5, be equipped with small cylinder 4 on the acceleration cable 5, welded a sliding sleeve 3 on the fixed head 2, small cylinder 4 places sliding sleeve 3, small cylinder 4 moves freely in sliding sleeve 3 with acceleration cable 5 actions.Connect with guide switch K again and receive power supply with after the series arm of the control coil composition of small cylinder electromagnetic valve Y is in parallel in series arm that the series arm that the control coil of pressure switch KP and relay K M and idle speed control K switch 1 are formed, the contact of relay K M and the control coil of time relay KT are formed and the contact of time relay KT.
Referring to Fig. 4, Fig. 4 is the structure chart of the utility model embodiment 2, and acceleration cable 2 is provided with fixed pulley 6,7, and small cylinder 4 laterally links to each other with acceleration cable 5, and the pistons end of small cylinder 4 is provided with fixed pulley 8, and fixed pulley 8 links to each other with acceleration cable 5.Pressure switch KP, idle speed control K switch 1 link to each other with singlechip controller, and the output of singlechip controller meets the control coil Y of small cylinder 4.
Means of relay controlling control action process with conventional in the utility model is as follows:
Engine start: during engine start, hydraulic system guide switch K is in off-state, electromagnetic valve Y dead electricity, small cylinder 4 piston retraction in position, because small cylinder can be free to slide in sliding sleeve, length is fixed in acceleration cable, and the operator can operate acceleration cable 5, make motor reach corresponding throttle position, to adapt to the needs of excavation.As shown in Figure 1.
During normal the excavation, guide switch K closure, operator selectable was selected and was needed the auto idle speed function this moment, and this function is controlled with K switch 1.K1 opens, and system has the auto idle speed function, and K1 closes, this function conductively-closed.
Auto idle speed: in case the guide loop does not have pressure, pressure switch KP closure, relay K M gets electric, and if time relay KT trigger is operator's long period inoperation handle (can adjust), reach the setting-up time value, time relay KT closure, electromagnetic valve Y gets electric, the elongation of small cylinder 4 pistons, engine throttle is got back to idle position, and motor reduces the rotating speed operation as shown in Figure 3.
Get back to duty: when the operator operates electric liquid handle, pilot pressure K switch P detects pressure signal, switch opens, relay K M, time relay KT opens, electromagnetic valve Y dead electricity, the small cylinder piston retraction is to original position, and engine throttle 1 is stretched to original throttle position with small cylinder.
As follows in the utility model with monolithic processor controlled control action process:
This singlechip controller comprises central processing unit, signal pickup assembly, output device, power circuit etc.Central processing unit is handled logic analysis and output with the signal of gathering.Finish all functions of above-mentioned conventional relay control, but wiring is simpler, it is more reliable to work, and is applicable to large batch of application.Its wiring and block diagram are as shown in Figure 4.
Engine start: during engine start, hydraulic system guide switch K is in off-state, electromagnetic valve Y dead electricity, small cylinder 4 piston retraction in position, because small cylinder can be free to slide in sliding sleeve, length is fixed in acceleration cable, and the operator can operate acceleration cable 5, make motor reach corresponding throttle position, to adapt to the needs of excavation.
During normal the excavation, guide switch K closure, operator selectable was selected and was needed auto idle speed function (with K switch 1 control) this moment.K1 opens, and the switching value signal enters central processing unit and carries out logic analysis through after photoelectricity isolation and the filtering, makes system have the auto idle speed function, and K1 closes, this function conductively-closed.
Auto idle speed: in case the guide loop does not have pressure, pressure switch KP closure, the switching value signal is through after photoelectricity isolation and the filtering, enter central processing unit and carry out logic analysis, if the operator does not have operating grip the long period, reach setting value (this value can be set), this moment, central processing unit will produce semaphore output, this port is connected with electromagnetic valve Y, electromagnetic valve Y gets, the elongation of small cylinder 4 pistons, engine throttle is got back to idle position. and motor reduces the rotating speed operation as shown in Figure 4.
Get back to duty: when the operator operates electric liquid handle, this moment, the guide loop produced pressure, pressure switch KP disconnects, central processing unit carries out logic analysis, output signal disconnects, electromagnetic valve Y dead electricity, small cylinder piston retraction are to original position, and engine throttle 1 is stretched to original throttle position with small cylinder.
The electromagnetic valve that the also available function of small cylinder in the foregoing description is identical replaces.
The above only is a specific embodiment of the utility model, does not limit protection domain of the present utility model with this, and any equivalent transformation of doing based on the utility model all belongs to the utility model protection domain.
Claims (7)
1, the auto idle speed device of small type hydraulic excavator comprises engine throttle, small cylinder, acceleration cable, it is characterized in that: the acceleration cable of small type hydraulic excavator is provided with the acceleration cable adjusting device.Be connected in series a small cylinder, small cylinder is installed in the sliding sleeve, control section is made of pressure switch (KP), relay (KM), hydraulic cylinder electromagnetic valve (Y) and a single-chip microcomputer.
2, the auto idle speed device of small type hydraulic excavator according to claim 1 is characterized in that: described acceleration cable adjusting device is a small cylinder, and is serially connected with in the backguy of dropping in, and small cylinder is installed in the sliding sleeve.
3, the auto idle speed device of small type hydraulic excavator according to claim 1 is characterized in that: described acceleration cable adjusting device is a small cylinder that laterally links to each other with acceleration cable, and the pistons end of small cylinder links to each other with acceleration cable.
4, according to the auto idle speed device of right 3 described small type hydraulic excavators, it is characterized in that: acceleration cable passes two fixed pulleys, and small cylinder is located between two fixed pulleys, and the pistons end of small cylinder links to each other with acceleration cable through fixed pulley.
5, according to the auto idle speed device of claim 2 or 3 described small type hydraulic excavators, it is characterized in that, the control connection of described small cylinder is: connect with guide switch (K) and receive power supply with after the series arm of the control coil composition of small cylinder (Y) is in parallel in the series arm that the series arm that the control coil of pressure switch (KP) and relay (KM) is formed, the contact of relay (KM) and the control coil of the time relay (KT) are formed and the contact of the time relay (KT).
6, the auto idle speed device of small type hydraulic excavator according to claim 5 is characterized in that, is serially connected with idle speed control switch (K1) in the series arm that the control coil of described pressure switch (KP) and relay (KM) is formed.
7, according to the auto idle speed device of claim 2 or 3 described small type hydraulic excavators, it is characterized in that, the control control connection of described small cylinder is: pressure switch (KP), idle speed control switch (K1) link to each other with singlechip controller, and the output of singlechip controller connects the control coil of small cylinder (Y).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520050630 CN2787734Y (en) | 2005-03-31 | 2005-03-31 | Automatic idling device of small-sized hydraulic excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520050630 CN2787734Y (en) | 2005-03-31 | 2005-03-31 | Automatic idling device of small-sized hydraulic excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2787734Y true CN2787734Y (en) | 2006-06-14 |
Family
ID=36786029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520050630 Expired - Fee Related CN2787734Y (en) | 2005-03-31 | 2005-03-31 | Automatic idling device of small-sized hydraulic excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2787734Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162268A (en) * | 2011-04-20 | 2011-08-24 | 山重建机(济宁)有限公司 | Traveling control device for crawler hydraulic excavator |
| CN101646826B (en) * | 2007-03-29 | 2012-06-27 | 株式会社小松制作所 | Working machine |
| CN102635138A (en) * | 2011-02-10 | 2012-08-15 | 日立建机株式会社 | Power source control circuit for working machine |
| CN102677730A (en) * | 2011-12-30 | 2012-09-19 | 柳工常州挖掘机有限公司 | Automatic idle speed control system of excavator |
| CN105221276A (en) * | 2014-10-15 | 2016-01-06 | 徐州重型机械有限公司 | A kind of controlling method of engine speed, system and hoist |
| CN110820839A (en) * | 2019-10-24 | 2020-02-21 | 山重建机有限公司 | Throttle control mechanism of wheel excavator |
-
2005
- 2005-03-31 CN CN 200520050630 patent/CN2787734Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101646826B (en) * | 2007-03-29 | 2012-06-27 | 株式会社小松制作所 | Working machine |
| CN102635138A (en) * | 2011-02-10 | 2012-08-15 | 日立建机株式会社 | Power source control circuit for working machine |
| CN102635138B (en) * | 2011-02-10 | 2016-01-13 | 日立建机株式会社 | The power control circuit of Work machine |
| CN102162268A (en) * | 2011-04-20 | 2011-08-24 | 山重建机(济宁)有限公司 | Traveling control device for crawler hydraulic excavator |
| CN102677730A (en) * | 2011-12-30 | 2012-09-19 | 柳工常州挖掘机有限公司 | Automatic idle speed control system of excavator |
| CN102677730B (en) * | 2011-12-30 | 2014-12-10 | 柳工常州挖掘机有限公司 | Automatic idle speed control system of excavator |
| CN105221276A (en) * | 2014-10-15 | 2016-01-06 | 徐州重型机械有限公司 | A kind of controlling method of engine speed, system and hoist |
| CN110820839A (en) * | 2019-10-24 | 2020-02-21 | 山重建机有限公司 | Throttle control mechanism of wheel excavator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060614 Termination date: 20140331 |